how can i get the amulet back to get in there

go back into the tomb if you have the glarials stone

Go to the Tree Gnome Village maze and down the dungeon ladder just before the entrance to the Gnome Village. Talk to Golrie to get a pebble.

 

 

 

Now bank all of your armour and weapons (and runes), get some food and charge up your prayer. Go back to Hadley's house, go up to the grave a little northeast of there. Use the pebble on the tombstone and you will be taken down into the tomb.

 

 

 

Note: You will not be able to enter the tomb if you have any armour or weapons or runes on you. If using the pebble on the tomb does nothing, you probably have some prohibited items on that you need to bank. Be aware that there are level 84 Moss giants in this tomb, so have full run energy and be ready to use it! (You are not required to fight them - just survive them.)

 

 

 

 

 

 

 

Go west and open the chest there, search it and you will find Glarial's Amulet.